This bracelet is marked inside the closure. It is very hard to read but I think it could be 950. The bracelet is well made but instead of the usual safety chain it has two thin chains hanging - one with a key and one with a heart. I guess this might be symbolic but it is certainly not practical.

The bracelet might be European or Middle Eastern - I wish I knew.
I know that the Victorian used a lot of symbols in their jewelry but the piece does not look old enough to me.